The effect of first order magnetic field in a GaAs/AlAs spherical quantum dot with hydrogenic impurity

International Journal of Nano Dimension

مقاله 9، دوره 3، شماره 2، اسفند 2012، صفحه 149-154   

نوع مقاله: Reasearch Paper

شناسه دیجیتال (DOI): 10.7508/ijnd.2012.02.008

نویسندگان

M. Abdollahi؛ M. A. Talebian Darzi^* ؛ H. Hoseinkhani؛ H. Baghbani Rizi

Department of physics, Faculty of science, I.H.U Tehran, Iran.

چکیده

In this research, the effect of the first order magnetic field on the ground-state of a centered hydrogenic donor impurity in a GaAs/AlAs spherical quantum dot has been calculated. The perturbation method has been used within the framework of effective mass approximation for these calculations. Overall, the analysis shows that a proper choice of quantum dot radius and magnetic field can significantly change the normalized binding energy. The concluded information may be used to calculate the small changes in quantum dot radius and thus detect different magnetic field strengths.

کلیدواژه‌ها

Hydrogenic impurity؛ Perturbation method؛ Spherical quantum dot؛ Turning point